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1976 6th European Microwave Conference最新文献

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Quasi-Optical Millimeter Waveguides and Components 准光毫米波波导及元件
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332277
R. Mittra
{"title":"Quasi-Optical Millimeter Waveguides and Components","authors":"R. Mittra","doi":"10.1109/EUMA.1976.332277","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332277","url":null,"abstract":"In this paper we review a number of quasi-optical waveguide structures and discuss their application to millimeter-wave integrated circuits. Some novel designs for dielectric waveguides and passive components using these waveguides are described. A summary of the results of theoretical and experimental studies of these waveguides and circuits is presented.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122897141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Matched-Feeds for Offset Parabolic Reflector Antennas 偏置抛物面反射天线的匹配馈源
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332262
A. Rudge, N. Adatia
{"title":"Matched-Feeds for Offset Parabolic Reflector Antennas","authors":"A. Rudge, N. Adatia","doi":"10.1109/EUMA.1976.332262","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332262","url":null,"abstract":"In many practical applications the performance of offset parabolic reflector antennas are limited by the reflectors' depolarising and beam-squinting properties. The paper describes progress in the development of a new class of primary-feed antennas which overcome these major limitations. Computed data based upon analytical models of the antennas and experimental results obtained from antennas constructed for operation at 30 GHz are presented for applications which include both communications and tracking radars.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121874036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Beam Waveguide Feed for Frequency Re-Use in Cassegrain Antennas 卡塞格伦天线频率复用的波束波导馈源
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332265
B. Claydon
{"title":"Beam Waveguide Feed for Frequency Re-Use in Cassegrain Antennas","authors":"B. Claydon","doi":"10.1109/EUMA.1976.332265","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332265","url":null,"abstract":"The use of a beam waveguide feed for a Cassegrain earth station antenna has several mechanical advantages over a conventional feed. To ascertain the suitability of this type of feed for orthogonal polarization frequency re-use applications, a near-field diffraction analysis has been made of a configuration comprising offset sections of paraboloids. Emphasis has been placed on depolarization by the beam waveguide reflectors, the effect of inherent cross-polarization due to an imperfect feedhorn, and the effects of misalignments within the reflector system.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116901834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Linearization of L-Band Power Transistor Amplifiers to be used with a Multicarrier Signal 用于多载波信号的l波段功率晶体管放大器的线性化
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332309
S. Padovani, P. L. Faja
{"title":"Linearization of L-Band Power Transistor Amplifiers to be used with a Multicarrier Signal","authors":"S. Padovani, P. L. Faja","doi":"10.1109/EUMA.1976.332309","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332309","url":null,"abstract":"Two linearization methods: -Feed-back loop -Forward bias of base emitter junction are used in the design of L-Band linear amplifiers for multicarrier operation in view of achieving C/I figures in the range of 24 dB to 26 dB without significant sacrifice of the efficiency. These amplifiers are a key item of the satellite transponders devoted to the maritime traffic control (MAROTS) and of the future spaceborne L-band phased array systems.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122436176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical and Experimental Study of Loss Parameters and High Order in OSEL Devices OSEL器件损耗参数与高阶的理论与实验研究
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332337
G. Forterre, J. Marcoux, L. Courtois
{"title":"Theoretical and Experimental Study of Loss Parameters and High Order in OSEL Devices","authors":"G. Forterre, J. Marcoux, L. Courtois","doi":"10.1109/EUMA.1976.332337","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332337","url":null,"abstract":"Non reciprocal devices using the dynamic surface mode can operate on a broad frequency band. However, beyond a given frequency, some higher order modes can propagate and this fact limits the operational bandwidth. A theoretical and experimental investigation of the influence of ferrite slab roughness on modes conversion is presented. A perturbation method, developed in the case of an anisotropic medium, allows the computation of direct and reflected fields in the structure, for a given roughness. A good agreement between theory and experiment has been found with three different roughness. Two examples of particular applications for isolator structure improvement, i.e. very low insertion losses and very broad band devices, are given.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129460275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Element Position Modulated Antenna Array 一种元件位置调制天线阵列
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332299
G. Sanyal, M. Sharma
{"title":"An Element Position Modulated Antenna Array","authors":"G. Sanyal, M. Sharma","doi":"10.1109/EUMA.1976.332299","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332299","url":null,"abstract":"Analysis has been presented for a non-uniformly spaced linear array of large number of isotropic elements at locations obtained by simusoidal position modulation. Studies on the space factor of such an array reveal lower sidelobe and grating plateaux levels in comparison to the uniform array. This type of array can be designed to phase scan the beam over a very wide range with low sidelobes. The sidelobes are expected to be lower for nonuniform excitation. Computed results for a 147 element array have been presented to confirm the analysis.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129637316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Power Ga-As F.E.T. Characterization 功率Ga-As fet表征
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332342
P. Dufond, H. Derewonko
{"title":"Power Ga-As F.E.T. Characterization","authors":"P. Dufond, H. Derewonko","doi":"10.1109/EUMA.1976.332342","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332342","url":null,"abstract":"Microwave Ga-As F.E.T. characterization, starting from internal geometry is presented and extended to power F.E.T.A computer program, solving the transport equations for charge carriers in the channel versus biasing conditions and geometrical parameters, gives static characteristics and the equivalent circuit. Calculation of the saturation current and the breakdown voltage gives the maximum output power of the device together with the optimum load impedance. From these results, dependance of gain versus output power is derived. Comparisons between theoretical and experimental results are presented at 10 GHz.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128866115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Convolution in a Pulse Biased ZnO-SiO2-Si Saw Device 脉冲偏置ZnO-SiO2-Si锯装置中的卷积
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332278
J. K. Elliott, R. Gunshor, R. Pierret, K. L. Davis
{"title":"Convolution in a Pulse Biased ZnO-SiO2-Si Saw Device","authors":"J. K. Elliott, R. Gunshor, R. Pierret, K. L. Davis","doi":"10.1109/EUMA.1976.332278","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332278","url":null,"abstract":"A monolithic SAW device consisting of an rf sputtered ZnO film on a thermally oxidized silicon substrate has been shown to be useful for several signal processing and optical image scanning applications. The device efficiency and sensitivity can be varied greatly by employing any of several biasing techniques, both dc and pulsed. We report new effects related to a pulse biasing method which exploits surface states at the SiO2-Si interface. The increased optical sensitivity obtained by this technique makes the device an attractive optical scanner and optically programmed adaptive convolver.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124580003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Design and Operation of Trapatt Diodes for Systems Requirements in the 1-5GHz Frequency Band 1-5GHz频段系统需求的Trapatt二极管设计与工作
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332295
J. Summers, B. Newton, M. Pierrepont, C. Corbey, M.A. Ayling, M. Stace
{"title":"The Design and Operation of Trapatt Diodes for Systems Requirements in the 1-5GHz Frequency Band","authors":"J. Summers, B. Newton, M. Pierrepont, C. Corbey, M.A. Ayling, M. Stace","doi":"10.1109/EUMA.1976.332295","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332295","url":null,"abstract":"Trapatt devices and circuits have been designed for use as solid state transmitters for pulse radars in the l-5GHz range. This has been achieved as a result of a device and circuit investigation in which pulse powers of up to 120 watts with 44% efficiency and mean powers greater than 1 watt have been obtained reproducibly from single diodes at 2.3GHz. An essential part of the work has been to relate real systems requirements to device design and also to device-circuit interactions. As a result of this understanding and the compatibility of the devices with M.I.C. techniques it has been possible to design compact reliable oscillators for the l-5GHz frequency range.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121656391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Single Channel per Carrier Satellite Communication Systems 单信道每载波卫星通信系统
1976 6th European Microwave Conference Pub Date : 1976-10-01 DOI: 10.1109/EUMA.1976.332322
B. Evans, P. J. Cott
{"title":"Single Channel per Carrier Satellite Communication Systems","authors":"B. Evans, P. J. Cott","doi":"10.1109/EUMA.1976.332322","DOIUrl":"https://doi.org/10.1109/EUMA.1976.332322","url":null,"abstract":"Until recently commercial satellite communication systems were restricted to the INTELSAT global system operating in a communication mode which assembled baseband signals in frequency-division-multiplex (f.d.m.) and modulated them onto an r.f. carrier via frequency modulation (f.m.). Many such carriers separated in frequency and transmitted simultaneously via the same satellite give rise to the frequency division multiple access (f.d.m.a.) system. In the past few years the increase in traffic demand (mainly for telephony circuits) has had an important impact on satellite communication systems. It has spurred the search for more efficient modulation/multiple access schemes to enable satellites operating in restricted frequency bands to achieve greater capacity. The second major advance has been an end to the global system dominance of satellite systems with a new era of domestic,and regional satellite systems. Already systems are in operation in the U.S.A., Canada and Indonesia viLa dedicated satellites and in Algeria and Brazil via leased INTELSAT transponders. Many other nations iLncluding Europe, Japan, Iran, Afr-ica and the Arab states have advanced plans for domestic and regional services in the next few years.","PeriodicalId":377507,"journal":{"name":"1976 6th European Microwave Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127153247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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